Bug#1077759: gosa: failed to change user entry: Uncaught ReflectionException: Property LDAP::$count does not exist

[devel at sumpfralle.de]

Hello,

now I realized, that this problem does not only affect account modifications,
but also the creation of new accounts.

I took a closer look at the problematic code in
`plugins/personal/generic/class_user.inc` around line 1355:

```
if ($this->config->get_cfg_value("core","accountPrimaryAttribute") != "uid"){
  $ldap->cat($this->new_dn);
  if ($ldap->count() != 0 && $this->dn != $this->new_dn && $this->dn == 'new'){
    $message[]= msgPool::duplicated(_("Name"));
  }
}
```

The above code was changed in 2022 (f9076ea89512):

```
- $ldap->cat($this->new_dn);
- if ($ldap->count() != 0 && $this->dn != $this->new_dn && $this->dn == 'new'){
+ $ldap->cat($ldap->count);
+ if ($ldap->count != 0 && $this->dn != $this->new_dn && $this->dn == 'new'){
```

I lack the understanding for the `cat()` call.
But the direct `ldap->count` access (instead of `ldap->count()`) looks weird to
me.

In the end I decided to disable (comment) the whole `if` block (see the first
code quotation). Now the code does not check for duplicate uid entries anymore,
but at least we can create and modify user accounts again.

Cheers,
Lars